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https://issues.apache.org/jira/browse/FLINK-8822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16392953#comment-16392953
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ASF GitHub Bot commented on FLINK-8822:
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Github user zentol commented on the issue:
https://github.com/apache/flink/pull/5609
ehh...probably. The PR has a point as `sed --help` (v4.2.2) does not list
the `-E` option.
If we want to be super safe we could check that `sed -r` is supported and
use `-E` as a backup.
> RotateLogFile may not work well when sed version is below 4.2
> -------------------------------------------------------------
>
> Key: FLINK-8822
> URL: https://issues.apache.org/jira/browse/FLINK-8822
> Project: Flink
> Issue Type: Bug
> Affects Versions: 1.4.0
> Reporter: Xin Liu
> Priority: Major
> Fix For: 1.5.0
>
>
> In bin/config.sh rotateLogFilesWithPrefix(),it use extended regular to
> process filename with "sed -E",but when sed version is below 4.2,it turns out
> "sed: invalid option -- 'E'"
> and RotateLogFile won't work well : There will be only one logfile no matter
> what is $MAX_LOG_FILE_NUMBER.
> so use sed -r may be more suitable.
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